NSN 5306-00-520-6442

Part Details | CLOSE TOLERANCE BOLT

5306-00-520-6442 An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the Screw Thread Standards, FED STD H28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see BOLT, SHEAR. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see BOLT, MACHINE.

Alternate Parts: 265329022, 265-329022, 265329022, 265-329022, 5306-00-520-6442, 00-520-6442, 5306005206442, 005206442

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53JAN 01, 196300-520-644227851 ( BOLT, CLOSE TOLERANCE )
REFERENCE DRAWINGS & PICTURES

UNDERCUT HEXAGON

Cross Reference | NSN 5306-00-520-6442
Part Number Cage Code Manufacturer
265-32902243999BOEING COMPANY, THEDBA BOEING
265-32902206710VALLEY-TODECO, INC.DBA ARCONIC FASTENING SYSTEMS AND
Technical Data | NSN 5306-00-520-6442
Characteristic Specifications
THREAD SERIES DESIGNATOR UNF
NOMINAL THREAD DIAMETER0.312 INCHES
THREAD QUANTITY PER INCH24
THREAD CLASS3A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.375 INCHES MINIMUM
FASTENER LENGTH2.719 INCHES NOMINAL
MINIMUM TENSILE STRENGTH180000 POUNDS PER SQUARE INCH
HEAD STYLE3 UNDERCUT HEXAGON
HEAD DIAMETER0.625 INCHES NOMINAL
HEAD HEIGHT0.188 INCHES NOMINAL
WIDTH BETWEEN FLATS0.502 INCHES MINIMUM AND 0.514 INCHES MAXIMUM
GRIP LENGTH2.250 INCHES MINIMUM AND 2.260 INCHES MAXIMUM
GRIP DIAMETER0.3404 INCHES MINIMUM AND 0.3409 INCHES MAXIMUM